Self-Luminous Display Power Consumption Detection via Line Cycle Synchronization
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Solution Overview
Problem
Existing self-luminous display apparatuses face challenges in accurately detecting and controlling power consumption in real-time, as existing techniques only estimate power consumption on a frame-by-frame basis, failing to capture fluctuations within each frame period effectively.
Innovation Solution
A power consumption detection apparatus and control apparatus that calculate line currents and power consumption based on image signals, allowing for real-time detection and control on a horizontal line cycle, synchronized with horizontal synchronization pulses, enabling precise detection and control of power consumption at intervals divided by vertical resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If power consumption is estimated on a frame-by-frame basis using known techniques, then the measurement process is simple, but the detection precision is insufficient to capture fluctuations within each frame period
Solution Approach 1:
The patent segments the frame period into multiple horizontal line periods and further divides each horizontal line period into multiple time slots. This segmentation allows power consumption to be detected at finer time intervals (every horizontal line period) rather than once per frame, capturing fluctuations that occur within the frame period while maintaining a manageable detection system structure.
Solution Approach 2:
The patent implements periodic detection of power consumption at each horizontal line period using a detection unit that operates synchronously with the display scanning process. This periodic action enables continuous monitoring of power consumption fluctuations throughout the frame period, providing high-resolution temporal data without requiring complex continuous measurement systems.
2Productivity
If power consumption detection is performed at every horizontal line period, then real-time detection precision is improved, but the processing load increases
Solution Approach 1:
The patent performs preliminary calculation of the sum of luminance values for all pixels in each horizontal line during the normal display processing. This preliminary action prepares the necessary data in advance, so that when power consumption calculation is needed, the system only needs to retrieve and process pre-computed values rather than performing complex measurements in real-time.
Solution Approach 2:
The patent introduces an auxiliary storage unit that acts as an intermediary between the detection unit and the frame memory. This intermediary stores the sum of luminance values for each horizontal line, allowing the system to efficiently access and process power consumption data without directly querying the large frame memory structure, thus reducing processing complexity.
3Measurement precision
If the detection interval is reduced to horizontal line cycle, then the detection precision is improved, but the power consumption for control increases
Solution Approach 1:
The patent calculates power consumption for each horizontal line separately and then sums these values to obtain the total frame power consumption. This partial action approach allows the system to detect power consumption at high resolution (every horizontal line) while only performing the actual power calculation on the aggregated data, avoiding excessive computational overhead and control power consumption.
Data Source
AI summary
An image processing apparatus is disclosed. The image processing apparatus includes a display panel and comprises a control section configured to control a duty pulse width for controlling an illumination period within a horizontal line period on a timing synchronized with a horizontal synchronization pulse.